CN104769367A - Fluid transportation device and fluid transportation method - Google Patents

Fluid transportation device and fluid transportation method Download PDF

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Publication number
CN104769367A
CN104769367A CN201380039544.2A CN201380039544A CN104769367A CN 104769367 A CN104769367 A CN 104769367A CN 201380039544 A CN201380039544 A CN 201380039544A CN 104769367 A CN104769367 A CN 104769367A
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CN
China
Prior art keywords
fluid
upside down
ejiction opening
handled upside
carrying
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Granted
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CN201380039544.2A
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Chinese (zh)
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CN104769367B (en
Inventor
赤木富士雄
山口住夫
安东洋一
比嘉和夫
原贺勇壮
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Individual
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Individual
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/009—Influencing flow of fluids by means of vortex rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F2013/0612—Induction nozzles without swirl means

Abstract

Provided is a fluid transportation device and a fluid transportation method in which a transported fluid such as a gas or a liquid can be ejected into a space from an ejection unit and transported locally to a target location distant from the ejection unit while minimizing scattering. In the present invention, the transporting fluid (F0) is ejected from an ejection port (2a) into a space and thereby forms vortex rings (4), and the transported fluid (F1) is fed to the outside of the transporting fluid (F0) at a speed that is lower than that at the center of the transporting fluid (F0), whereby the transported fluid (F1) is directly accommodated in the vortex rings (4) formed by the transporting fluid (F0) moving in a rolling motion at the ejection port (2a), and transported together with the vortex rings (4).

Description

Fluid handling device and fluid method for carrying
Technical field
The present invention relates to a kind of fluid handling device and fluid method for carrying, in this fluid handling device and fluid method for carrying, in space, spray gas or liquid etc. from blowing unit and be handled upside down fluid, and while suppress diffusion between blowing unit to the target location be separated, carry in local.
Background technology
As in space, from blow-off outlet to target location, blowout is handled upside down gas to the gaseous transfer method making this be handled upside down gas arrival target location, such as, Patent Document 1 discloses following method, namely, in space, make to be handled upside down gas from blow-off outlet blowout, form gas with ring-type in the cross section vertical with the circumference of this ring-type and rotate with eddy current shape around kernel of section portion and the state of collar vortex that formed with ring-type, the method for advancing to target location.
Prior art document
Patent document
Patent document 1:JP Unexamined Patent 7-332750 publication
Summary of the invention
The problem that invention will solve
In above-mentioned method in the past, make to be handled upside down gas self to blow out from blow-off outlet with the variation of the flow of pulse type, make formation collar vortex thus and make to be handled upside down gas held to carry out to the action in collar vortex simultaneously, but in the method, actually can not to be contained in being handled upside down gas continuously in collar vortex.That is, in method in the past, be difficult to suppress to spread will be handled upside down gaseous transfer to the objective be separated continuously.
Therefore, the object of the present invention is to provide one in space, to spray gas or liquid etc. from blowing unit and be handled upside down fluid, and diffusion can be suppressed while at the fluid handling device locally carrying out carrying and fluid method for carrying between blowing unit to the target location be separated.
For the means of dealing with problems
Fluid handling device of the present invention has: blowing unit, sprays carrying fluid form collar vortex from ejiction opening in space; Be handled upside down fluid feeding unit, be handled upside down fluid with the speed that the speed at the center than carrying fluid is low to the outside supply of carrying fluid.In addition, fluid method for carrying of the present invention, is characterized in that, forms collar vortex by spraying carrying fluid in space from ejiction opening, and is handled upside down fluid with the speed that the speed at the center than carrying fluid is low to the outside supply of carrying fluid.
According to these inventions, directly hold in the collar vortex formed because volume on carrying fluid at ejiction opening with the fluid that is handled upside down that the speed that the speed at the center than carrying fluid is low supplies to the outside of carrying fluid, be handled upside down together with collar vortex.
At this, being preferably handled upside down fluid feeding unit is be handled upside down the stream of fluid along the wall ejection of blowing unit.Thus, be handled upside down centered by fluid by what spray along the wall of blowing unit, form collar vortex at ejiction opening by volume on carrying fluid, will fluid will be handled upside down be contained in the central part of collar vortex thus.
In addition, by when being carried to target location by the fluid that heats or cooled fluid, be handled upside down fluid feeding unit can be formed by the heating source be arranged on the wall of blowing unit or cooling source described in be handled upside down fluid.Thus, by being arranged on heating source on the wall of blowing unit or cooling source to for the formation of the carrying fluid heating of collar vortex or cooling, thus, the part be heated or cooled of this carrying fluid is formed centrally collar vortex in being involved in.
In addition, other fluid handling device of the present invention has: the first ejiction opening, and under the condition becoming laminated flow spray stream, ejection is handled upside down fluid; Second ejiction opening, to surround the mode of the peripheral part of the first ejiction opening, the width with less than 1/2 of the diameter of the inscribed circle of the first ejiction opening forms ring-type, with ring-type injection stream ejection second fluid.
In addition, other fluid method for carrying of the present invention, it is characterized in that, fluid is handled upside down from the first ejiction opening ejection under the condition becoming laminated flow spray stream, and, the second ejiction opening of ring-type is formed, with ring-type injection stream ejection second fluid by the mode of the peripheral part to surround the first ejiction opening and with the width of less than 1/2 of the diameter of the inscribed circle of the first ejiction opening.
According to these inventions, the effect of air screen is played from the ring-type injection stream of the second ejiction opening ejection, what suppression sprayed from the first ejiction opening under the condition becoming laminated flow spray stream is handled upside down fluid (below, also be called " diffusion of main jet jet "), therefore, it is possible to will be handled upside down fluid remain in ring-type injection stream constant local carrying.
At this, preferably using the speed (from the volume flow being handled upside down fluid of the first ejiction opening ejection divided by the sectional area of the first ejiction opening) being handled upside down fluid (main jet jet) from the first ejiction opening ejection as U m, using the speed of the second fluid (ring-type injection stream) from the second ejiction opening ejection (from the volume flow of the second fluid of the second ejiction opening ejection divided by the sectional area of the second ejiction opening) as U atime, 0.25≤U a/ U m≤ 2.More preferably, U a/ U m≤ 1.
Best speed changes than the speed according to main jet jet, but in the spouting velocity in usage range, in order to until relative to being handled upside down distance and can both preventing diffusion completely of 10D of the diameter D of the first ejiction opening, become 0.25≤U a/ U m≤ 2.In addition, U a/ U m=0.75 is until target range remains on constant in ring-type injection stream by being handled upside down fluid and can carrying out the velocity ratio of the best of carrying in local.In addition, U is being become a/ U mwhen>=1, ring-type injection stream reduces, at U gradually as the function of air screen a/ U mfunction is played hardly during > 2.In addition, at U a/ U mduring < 0.25, although diffusion can be suppressed, can not until the distance that is handled upside down of 10D prevents diffusion completely.
Invention effect
According to fluid handling device of the present invention and fluid method for carrying, collar vortex is formed by spraying carrying fluid in space from ejiction opening, and be handled upside down fluid with the speed that the speed at the center than carrying fluid is low to the outside supply of carrying fluid, the fluid that is handled upside down supplied to the outside of carrying fluid with the speed that the speed at the center than carrying fluid is low is made directly to hold in the collar vortex formed because volume on carrying fluid at ejiction opening, thus while suppress from ejiction opening to separate targets position to be handled upside down fluid and to spread together with collar vortex, locally carrying.
In addition, of the present invention other fluid handling device and fluid method for carrying in, under the condition becoming laminated flow spray stream, fluid is handled upside down from the first ejiction opening ejection, the second ejiction opening of ring-type is formed by the mode of the peripheral part to surround the first ejiction opening and with the width of less than 1/2 of the diameter of the inscribed circle of the first ejiction opening, with ring-type injection stream ejection second fluid, ring-type injection stream plays the function of air screen thus, suppress to be handled upside down the diffusion of fluid, will be handled upside down fluid and remain on and constantly in ring-type injection stream locally to carry.
Accompanying drawing explanation
Fig. 1 is the cutaway view Amplified image of the structure near the ejiction opening of the nozzle of the fluid handling device forming the first embodiment of the present invention.
Fig. 2 is the B-B' sectional view of the nozzle of Fig. 1.
Fig. 3 A is the A portion enlarged drawing of the variation of the leading section of the nozzle representing Fig. 1.
Fig. 3 B is the A portion enlarged drawing of the variation of the leading section of the nozzle representing Fig. 1.
Fig. 4 A is the key diagram of the mode of the fluid handling device carrying fluid representing Fig. 1.
Fig. 4 B is the key diagram of the mode of the fluid handling device carrying fluid representing Fig. 1.
Fig. 4 C is the key diagram of the mode of the fluid handling device carrying fluid representing Fig. 1.
Fig. 5 is the cutaway view Amplified image of the structure near the ejiction opening of the nozzle of the fluid handling device forming the second embodiment of the present invention.
Fig. 6 is the cutaway view Amplified image of the structure near the ejiction opening of the nozzle of the fluid handling device forming the 3rd embodiment of the present invention.
Fig. 7 A is the longitudinal section being handled upside down the example of the nozzle of fluid represented for supplying Fig. 6.
Fig. 7 B is the longitudinal section being handled upside down the example of the nozzle of fluid represented for supplying Fig. 6.
Fig. 8 is the cutaway view Amplified image of the structure near the ejiction opening of the nozzle of the fluid handling device forming the 4th embodiment of the present invention.
Fig. 9 is the cutaway view Amplified image of the structure near the ejiction opening of the nozzle of the fluid handling device forming the 5th embodiment of the present invention.
Figure 10 is the cutaway view Amplified image of the structure near the ejiction opening of the nozzle of the fluid handling device forming the 6th embodiment of the present invention.
Figure 11 A is the outside drawing of the computing grid model of Numerical Experiment for embodiments of the invention.
Figure 11 B is the outside drawing of the computing grid model of Numerical Experiment for embodiments of the invention.
Figure 11 C is the outside drawing of the computing grid model of Numerical Experiment for embodiments of the invention.
Figure 12 is the oscillogram of the flow variation of the injection stream being used as embodiments of the invention.
Figure 13 A be represent utilize dimensionless vorticity to distribute water in the figure of forming process of collar vortex (eddies of water ring).
Figure 13 B be represent utilize dimensionless vorticity to distribute water in the figure of forming process of collar vortex (eddies of water ring).
Figure 13 C be represent utilize dimensionless vorticity to distribute water in the figure of forming process of collar vortex (eddies of water ring).
Figure 14 A is the figure of the phase place change representing collar vortex in-position.
Figure 14 B is the figure of the phase place change representing collar vortex diameter.
Figure 15 A be represent utilize dimensionless vorticity to distribute air in the figure of forming process of collar vortex (air collar vortex).
Figure 15 B be represent utilize dimensionless vorticity to distribute water in the figure of forming process of collar vortex (eddies of water ring).
Figure 16 is the figure of the relation represented between the dimensionless circulation of collar vortex and the Strouhal number Str of pulse jet stream.
Figure 17 A represents that the circulation of collar vortex is the figure of the forming process of air collar vortex under maximum pulsating condition.
Figure 17 B represents that the circulation of collar vortex is the figure of the forming process of air collar vortex under maximum pulsating condition.
Figure 18 A represents the skeleton diagram for the method held in collar vortex by hot fluid.
Figure 18 B represents the skeleton diagram for the method held in collar vortex by hot fluid.
Figure 18 C represents the skeleton diagram for the method held in collar vortex by hot fluid.
Figure 19 A is the figure representing the result that hot fluid holds in collar vortex.
Figure 19 B is the figure representing the result that hot fluid holds in collar vortex.
Figure 19 C is the figure representing the result that hot fluid holds in collar vortex.
Figure 19 D is the figure representing the result that hot fluid holds in collar vortex.
Figure 19 E is the figure representing the result that hot fluid holds in collar vortex.
The figure of the relation between the arrival distance of collar vortex central point temperature when Figure 20 is method for expressing 4 and collar vortex.
Figure 21 is the cutaway view Amplified image of the structure near the ejiction opening of the twin-jet nozzle of the fluid handling device forming the 7th embodiment of the present invention.
Figure 22 is the figure of the visual photo representing the fluid sprayed from the leading section of the twin-jet nozzle of Figure 21.
Figure 23 is the key diagram of the change of the VELOCITY DISTRIBUTION represented relative to the distance Z apart from one-jet ejiction opening.
Figure 24 is the key diagram of the change of the VELOCITY DISTRIBUTION represented relative to distance the first ejiction opening of twin-jet nozzle, the distance Z of the second ejiction opening.
Figure 25 is the key diagram of the change of the VELOCITY DISTRIBUTION represented relative to distance the first ejiction opening of twin-jet nozzle, the distance Z of the second ejiction opening.
Description of reference numerals
F0 carries fluid
F1 is handled upside down fluid
1,5,9,12,15,19 fluid handling device
2,6,7,10,11,13,16,20 nozzles
2a, 6a, 7a, 10a, 11a, 13a, 16a, 20a ejiction opening
2b, 6b, 10b, 13b, 16b, 20b internal face
2c, 10c, 13c, 16c, 20c outside wall surface
3,8 streams
3a, 8a ejiction opening
4 collar vortexs
14,17 little spaces
14a, 17a opening portion
18 filtering materials
21 heating sources
30 twin-jet nozzles
31 first ejiction openings
32 second ejiction openings
40 single injectors
41 ejiction openings
Detailed description of the invention
(the first embodiment)
Fig. 1 is the cutaway view Amplified image of the structure near the ejiction opening of the nozzle of the fluid handling device forming the first embodiment of the present invention, and Fig. 2 is the B-B' sectional view of the nozzle of Fig. 1.As shown in Figure 1 and Figure 2, the fluid handling device 1 of the first embodiment of the present invention has cylindric nozzle 2, and this nozzle 2 is in space, spray from ejiction opening 2a the blowing unit that carrying fluid F 0 forms collar vortex.In addition, the internal face 2b ejection that fluid handling device 1 has along nozzle 2 is handled upside down the stream 3 of fluid F 1, this stream 3 be supply to the outside of the carrying fluid F 0 near ejiction opening 2a be handled upside down fluid F 1 be handled upside down fluid feeding unit.
As shown in Figure 2, stream 3 is the little streams of the ring-type formed in the wall of the nozzle 2 of cylindrical shape.Send from the ejiction opening 3a of stream 3 to the flow field of the carrying fluid F 0 of the inner side of nozzle 2 and be handled upside down fluid F 1.The distance a of ejiction opening 2a, the stream 3 of the ejiction opening 3a distance nozzle 2 of stream 3 can be set as arbitrary value with the angle of stream junction θ of the nozzle 2 and width b of stream 3, but the mode that preferably can be carried to ejiction opening 2a along the internal face 2b of nozzle 2 to be handled upside down fluid F 1 sets.In addition, stream 3 can not be formed as ring-type on complete cycle, can arrange stream 3 being partially formed stream 3 or separating predetermined distance.
The ejection flow of the carrying fluid F 0 sprayed by ejiction opening 2a is changed in time, forms collar vortex continuously by carrying fluid F 0.The waveform of flow variation such as can utilize following periodicity, intermittence or any waveform changed.
(1) sinusoidal waveform
(2) waveform of the acceleration change of sine-shaped rising edge or trailing edge is made
(3) square waveform
(4) triangular waveform
(5) trapezoidal waveform
(6) comprise during each week in the waveform of above-mentioned (1) ~ (5) flow be zero stop zone between the waveform of interval shape
(7) by the waveform of the waveform combination of above-mentioned (1) ~ (6) formation
In addition, can by make above shown in the amplitude of waveform, the cycle, the length of intermittent time and the built-up sequence change of waveform, regulate the size of the collar vortex of formation, volume, gait of march, intensity (difficult attenuation degree) and can reach.
Such as, pressurize by applying arbitrary pressure at the upstream side of stream 3, or to change with the flow of fluid and coordinate the pressure of the upstream side changing stream 3 while pressurize, with the speed that the speed at the center than carrying fluid F 0 is low, the outside from ejiction opening 3a to carrying fluid F 0 is sent and is handled upside down fluid F 1.Or, in non-pressurized situation, the pressure differential produced because of the variation of the fluid in nozzle 2 can also be utilized to send and to be handled upside down fluid F 1.
The ejection constant flow of the carrying fluid F 0 sprayed from ejiction opening 2a can also be made, under the condition of the speed low with the speed at the center than carrying fluid F 0, the ejection flow being handled upside down fluid F 1 sent from stream 3 is changed in time in the outside of carrying fluid F 0, forms collar vortex continuously.The variation waveform being handled upside down the ejection flow of fluid F 1 can use the waveform of above-mentioned (1) ~ (7).
In addition, the leading section of nozzle 2 can as shown in the A portion of Fig. 1 with the central axis of nozzle 2, in addition, outside wall surface 2c side can be made as shown in Figure 3A to be formed as taper, or internal face 2b side can be made as shown in Figure 3 B to be formed as taper.In addition, in order to form perfect collar vortex, the most preferably shape shown in Fig. 3 A, the shape shown in A portion of its less preferred Fig. 1.In addition, the blowing units such as throttle orifice can be formed to replace nozzle 2.
Fig. 4 A ~ Fig. 4 C is the key diagram of the fluid mode of transport of the fluid handling device 1 representing Fig. 1.While be handled upside down fluid F 1 with the speed lower than the speed at center of carrying fluid F 0 from stream 3 to the outside supply of carrying fluid F 0, when such as intermittently spraying carrying fluid F 0 from ejiction opening 3a in space as mentioned above on one side, as shown in Figure 4 A, be handled upside down fluid F 1 to be directly contained in because volume in carrying fluid F 0 in the collar vortex 4 that formed at ejiction opening 3a, as shown in Figure 4 B, be handled upside down together with collar vortex 4.By intermittently carrying out such carrying, as shown in Figure 4 C, can suppress to the target location be separated the diffusion being handled upside down fluid F 1 at ejiction opening 3a continuously with predetermined time interval, while carry in local.
In addition, in the present embodiment, ejiction opening 3a for spraying the stream 3 being handled upside down fluid F 1 is arranged on the internal face 2b of nozzle 2, but ejiction opening 3a can be arranged on the outside wall surface 2c side of nozzle 2, internal face 2b and outside wall surface 2c both sides can also be arranged on.In a word, as long as be handled upside down fluid F 1 with the speed that the speed at the center than carrying fluid F 0 is low to the outside supply of carrying fluid F 0, directly hold in the collar vortex 4 formed because volume in carrying fluid F 0 at ejiction opening 3a.
(the second embodiment)
Fig. 5 is the cutaway view Amplified image near the ejiction opening of the nozzle of the fluid handling device forming the second embodiment of the present invention.As shown in Figure 5, the fluid handling device 5 of the second embodiment of the present invention also has cylindric nozzle 7 in the inner side of the nozzle 6 of cylindrical shape.Carrying fluid F 0 is supplied by the nozzle 7 of inner side, intermittently sprays in space from the ejiction opening 6a of nozzle 6.Be handled upside down fluid F 1 with the speed lower than the speed at the center of carrying fluid F 0, supply to the outside of carrying fluid F 0 from the stream 8 of the ring-type formed between nozzle 6 and nozzle 7.
Or, to make the mode of ejection constant flow, supply carrying fluid F 0 from nozzle 7, come to space, to spray carrying fluid F 0 with constant flow from the ejiction opening 6a of nozzle 6.With the speed that the speed at the center than carrying fluid F 0 is low, be intermittently handled upside down fluid F 1 from the stream 8 of ring-type to the outside supply of carrying fluid F 0.
In addition, distance (distance of the ejiction opening 7a to ejiction opening 6a of the nozzle 7) a of the ejiction opening 8a to the ejiction opening 6a of nozzle 6 of the stream 8 and width b of stream 8 can be set arbitrarily, but preferably the mode being handled upside down fluid F 1 and being carried to ejiction opening 6a can be set along the internal face 6b of nozzle 6.In addition, the method being handled upside down fluid F 1 is sent from stream 8 identical with the first embodiment.In addition, the shape of the leading section of nozzle 6,7 is also identical with the first embodiment.
In such a configuration, while be handled upside down fluid F 1 with the speed lower than the speed at center of carrying fluid F 0 from stream 8 to the outside supply of carrying fluid F 0, when intermittently spraying carrying fluid F 0 from ejiction opening 6a in space on one side, be handled upside down fluid F 1 to be directly contained at ejiction opening 6a and in the collar vortex that formed, to be handled upside down together with collar vortex because volume in carrying fluid F 0.By intermittently carrying, can suppress to the target location be separated the diffusion being handled upside down fluid F 1 at ejiction opening 6a continuously with predetermined time interval, while carry in local.
Or, by making the ejection constant flow of the carrying fluid F 0 supplied from nozzle 7, spray in space with the ejiction opening 6a of constant flow rate from nozzle 6, and under the condition becoming the speed lower than the speed at center of carrying fluid F 0, intermittently to the ejection flow being handled upside down fluid F 1 that the outside supply of carrying fluid F 0 supplies from stream 8, carry volume in fluid F 0 thus and form collar vortex, and being handled upside down fluid F 1 and being directly contained in collar vortex.
In addition, in the present embodiment, ejiction opening 7a for the nozzle 7 supplying carrying fluid F 0 is configured in the inner side of the ejiction opening 6a of nozzle 6, but the ejiction opening 7a of nozzle 7 can be configured in the outside of the ejiction opening 6a of nozzle 6, or the ejiction opening 7a of the nozzle 7 and ejiction opening 6a of nozzle 6 can be configured on the same face.Now, fluid F 1 is handled upside down from the stream 8 of the ring-type be formed between nozzle 6 and nozzle 7 to the outside supply of carrying fluid F 0 equally with the speed that the speed at the center than carrying fluid F 0 is low, by being handled upside down in fluid F 1 collar vortex that directly accommodation is formed to carrying fluid F 0 volume because spraying in space from the ejiction opening 7a of nozzle 7, be handled upside down together with collar vortex.
(the 3rd embodiment)
Fig. 6 is the cutaway view Amplified image of the structure near the ejiction opening of the nozzle of the fluid handling device forming the 3rd embodiment of the present invention.As shown in Figure 6, the fluid handling device 9 of the 3rd embodiment of the present invention, on the internal face 10b of the nozzle 10 of the cylindrical shape of ejection carrying fluid F 0 in space, setting spaced apart is configured for supplying the nozzle 11 of the stream being handled upside down fluid F 1.As shown in Figure 7 A, about nozzle 11,1 or configure the ejiction opening 11a of multiple round tube shape at predetermined intervals can be configured on internal face 10b, or as shown in Figure 7 B, configure the ejiction opening 11a of the toroidal along internal face 10b.
Or, to space, spray carrying fluid F 0 with constant flow rate from nozzle 10.Under the condition becoming the speed lower than the speed at center of carrying fluid F 0, be intermittently handled upside down fluid F 1 from the ejiction opening 11a of nozzle 11 to the outside supply of carrying fluid F 0.
In addition, the internal face 10b of the distance a of the ejiction opening 11a of nozzle 11 to the ejiction opening 10a of nozzle 10, nozzle 10 can be set as arbitrary value to height c, the internal diameter φ d of ejiction opening 11a of toroidal of the central authorities of the ejiction opening 11a of nozzle 11 and the width e of the ejiction opening 11 of toroidal, but preferably set each above-mentioned value in the mode that fluid F 1 can be carried to ejiction opening 10a along the internal face 10b of nozzle 10 that is handled upside down sprayed from the ejiction opening 11a of nozzle 11.In addition, fluid F 1 is handled upside down identical with the first embodiment from the method for sending of nozzle 11.And the shape of the leading section of nozzle 10 is also identical with the first embodiment.
In such a configuration, while be handled upside down fluid F 1 with the speed lower than the speed at center of carrying fluid F 0 from the ejiction opening 11a of nozzle 11 to the outside supply of carrying fluid F 0, when intermittently spraying carrying fluid F 0 from ejiction opening 10a in space on one side, be handled upside down fluid F 1 to be directly contained at ejiction opening 10a and in the collar vortex that formed, to be handled upside down together with collar vortex because volume in carrying fluid F 0.By intermittently carrying, can suppress to the target location be separated the diffusion being handled upside down fluid F 1 at ejiction opening 10a continuously with predetermined time interval, while carry in local.
Or, while be handled upside down fluid F 1 with the speed lower than the speed at center of carrying fluid F 0 from the ejiction opening 11a of nozzle 11 to the outside supply of carrying fluid F 0, while when spraying carrying fluid F 0 with constant flow rate from ejiction opening 10a in space, be handled upside down fluid F 1 directly to hold in the collar vortex formed because of volume in carrying fluid F 0 at ejiction opening 10a, be handled upside down together with collar vortex.By intermittently carrying, can suppress to the target location be separated the diffusion being handled upside down fluid F 1 at ejiction opening 10a continuously with predetermined time interval, while carry in local.
In addition, in the present embodiment, will be used for spraying the nozzle 11 being handled upside down fluid F 1 and be arranged on the internal face 10b of nozzle 10, but nozzle 11 can be arranged on the outside wall surface 10c side of nozzle 10, or be arranged on internal face 10b and outside wall surface 10c both sides.In a word, as long as be handled upside down fluid F 1 with the speed that the speed at the center than carrying fluid F 0 is low to the outside supply of carrying fluid F 0, directly hold in the collar vortex formed because volume in carrying fluid F 0 at ejiction opening 10a.
(the 4th embodiment)
Fig. 8 is the cutaway view Amplified image of the structure near the ejiction opening of the nozzle of the fluid handling device forming the 4th embodiment of the present invention.As shown in Figure 8, the fluid handling device 12 of the 4th embodiment of the present invention, arranges the little space 14 being configured for supplying the stream being handled upside down fluid F 1 in the wall of nozzle 13 intermittently spraying the cylindrical shape of carrying fluid F 0 in space.Be provided with at the internal face 13b of nozzle 13 and be handled upside down the opening portion 14a such as the hole of fluid F 1 or slit for the outside supply from little space 14 to carrying fluid F 0.
Or, to space, spray carrying fluid F 0 with constant flow rate from nozzle 13.Under the condition becoming the speed lower than the speed at center of carrying fluid F 0, be intermittently handled upside down fluid F 1 from the opening portion 14a being arranged on little space 14 to the outside supply of carrying fluid F 0.
In addition, can by size, the setting position of the size in little space 14 and volume, opening portion 14a, interval is set and number is set as arbitrary value, but preferably set each above-mentioned value in the mode that fluid F 1 can be carried to ejiction opening 13a along the internal face 13b of nozzle 13 that is handled upside down sprayed from opening portion 14a.In addition, fluid F 1 is handled upside down identical with the first embodiment from the method for sending of nozzle 11.And the shape of the leading section of nozzle 13 is also identical with the first embodiment.
In such a configuration, while be handled upside down fluid F 1 with the speed lower than the speed at center of carrying fluid F 0 from the opening portion 14a in little space 14 to the outside supply of carrying fluid F 0, when intermittently spraying carrying fluid F 0 from ejiction opening 13a in space on one side, be handled upside down fluid F 1 directly to hold in the collar vortex formed because of volume in carrying fluid F 0 at ejiction opening 13a, be handled upside down together with collar vortex.By intermittently carrying, can suppress to the target location be separated the diffusion being handled upside down fluid F 1 at ejiction opening 13a continuously with predetermined time interval, while carry in local.
Or, while be handled upside down fluid F 1 with the speed lower than the speed at center of carrying fluid F 0 from the opening portion 14a in little space 14 to the outside supply of carrying fluid F 0, while when spraying carrying fluid F 0 with constant flow rate from ejiction opening 13a in space, be handled upside down fluid F 1 directly to hold in the collar vortex formed because of volume in carrying fluid F 0 at ejiction opening 13a, be handled upside down together with collar vortex.By intermittently carrying, can suppress to the target location be separated the diffusion being handled upside down fluid F 1 at ejiction opening 13a continuously with predetermined time interval, while carry in local.
In addition, in the present embodiment, spray from little space 14 the internal face 13b that the opening portion 14a being handled upside down fluid F 1 is arranged on nozzle 13 by being used for, but the outside wall surface 13c side of nozzle 13 can be arranged on, or be arranged on internal face 13b and outside wall surface 13c both sides.In a word, as long as be handled upside down fluid F 1 with the speed that the speed at the center than carrying fluid F 0 is low to the outside supply of carrying fluid F 0, directly hold in the collar vortex formed because volume in carrying fluid F 0 at ejiction opening 13a.
(the 5th embodiment)
Fig. 9 is the cutaway view Amplified image of the structure near the ejiction opening of the nozzle of the fluid handling device forming the 5th embodiment of the present invention.As shown in Figure 9, the fluid handling device 15 of the 5th embodiment of the present invention, arranges the little space 17 being configured for supplying the stream being handled upside down fluid F 1 in the wall of nozzle 16 intermittently spraying the cylindrical shape of carrying fluid F 0 in space.The opening portion 17a being handled upside down fluid F 1 for the outside supply from little space 17 to carrying fluid F 0 is provided with at the internal face 16b of nozzle 16.In addition, this opening portion 17a is provided with the filtering material 18 be made up of porous material, fibrous material or permeable membrane etc.
In addition, can by size, the setting position of the size in little space 17 and volume, opening portion 17a and filtering material 18, interval is set and number is set as arbitrary value, but preferably set each above-mentioned value in the mode that fluid F 1 can be carried to ejiction opening 16a along the internal face 16b of nozzle 16 that is handled upside down sprayed through filtering material 18 from opening portion 17a.In addition, the method for sending being handled upside down fluid F 1 is identical with the first embodiment.And the shape of the leading section of nozzle 16 is also identical with the first embodiment.
In such a configuration, while be handled upside down fluid F 1 through filtering material 18 to the outside supply of carrying fluid F 0 from the opening portion 17a in little space 17 with the speed lower than the speed at center of carrying fluid F 0, when intermittently spraying carrying fluid F 0 from ejiction opening 16a in space on one side, be handled upside down fluid F 1 directly to hold in the collar vortex formed because of volume in carrying fluid F 0 at ejiction opening 16a, be handled upside down together with collar vortex.By intermittently carrying, can continuously suppress to be handled upside down fluid F 1 at ejiction opening 16a to the target location be separated with predetermined time interval and spreading, while carry in local.
In addition, in the present embodiment, be handled upside down from the ejection of little space 17 the internal face 16b that the opening portion 17a of fluid F 1 and filtering material 18 are arranged on nozzle 16 by being used for, but the outside wall surface 16c side of nozzle 16 can be arranged on, or be arranged on internal face 16b and outside wall surface 16c both sides.In a word, as long as be handled upside down fluid F 1 with the speed that the speed at the center than carrying fluid F 0 is low to the outside supply of carrying fluid F 0, directly hold in the collar vortex formed because volume in carrying fluid F 0 at ejiction opening 16a.
(the 6th embodiment)
Figure 10 is the cutaway view Amplified image of the structure near the ejiction opening of the nozzle of the fluid handling device forming the 6th embodiment of the present invention.The fluid handling device 19 of the 6th embodiment of the present invention is carried to target location by by the fluid heated, as shown in Figure 10, intermittently in space the internal face 20b of nozzle 20 of the cylindrical shape of ejection carrying fluid F 0 and outside wall surface 20c heating source 21 is set.In addition, arbitrary value can be set as by being provided with the size in the region of heating source 21, setting position and setting area.In addition, the shape of the leading section of nozzle 20 is identical with the first embodiment.
In such a configuration, when the ejiction opening 20a intermittently from nozzle 20 sprays carrying fluid F 0 in space, the inner peripheral surface 20b of nozzle 20 and outer peripheral face 20c formed heated by heating source 21 be handled upside down fluid F 1.In addition, this formation is handled upside down fluid F 1 and directly holds at ejiction opening 20a and in the collar vortex that formed, be handled upside down together with collar vortex to because volume in carrying fluid F 0.By intermittently carrying, can continuously suppress to be handled upside down fluid F 1 at ejiction opening 20a to the target location be separated with predetermined time interval and spreading, while carry in local.
In addition, in the present embodiment, heating source 21 is arranged on inner peripheral surface 20b and the outer peripheral face 20c both sides of nozzle 20, but can be only arranged on any side.In a word, be handled upside down fluid F 1 as long as formed in the outside of carrying fluid F 0 by what heat, supply with the speed that the speed at the center than carrying fluid F 0 is low, directly hold in the collar vortex formed because of volume in carrying fluid F 0 at ejiction opening 20a.In addition, cooling source can be set and replace heating source 21, cooled fluid is carried to target location.
(the 7th embodiment)
Figure 21 is the cutaway view Amplified image of the structure near the ejiction opening of the twin-jet nozzle of the fluid handling device forming the 7th embodiment of the present invention.As shown in figure 21, the twin-jet nozzle 30 that the second ejiction opening 32 that the fluid handling device of the 7th embodiment of the present invention has the ring-type formed by the first ejiction opening 31 and the peripheral part surrounding the first ejiction opening 31 is formed.In addition, in the present embodiment, the first ejiction opening 31 is cylindric, and the second ejiction opening 32 is circular, and its central shaft is coaxial with the first ejiction opening 31, and its width is less than 1/2 of the diameter of the first ejiction opening 31.
Fluid is handled upside down from the first ejiction opening 31 ejection with laminated flow spray stream.Specifically, the reynolds number Re (=ρ U being handled upside down fluid sprayed from the first ejiction opening 31 is made 0d/ μ=U 0d/ ν, ρ: density, U 0: the cross section average speed of injection stream, D: the diameter of ejiction opening 31, μ: viscosity, ν: kinematic viscosity coefficient) be greater than 0 and be less than or equal to 2000.On the other hand, with ring-type injection stream from second ejiction opening 32 spray from spray from the first ejiction opening 31 be handled upside down the different second fluid of fluid.In addition, second fluid also can be and be handled upside down fluid-phase homogeneous turbulence body.
At this, be U in the speed being handled upside down fluid sprayed from the first ejiction opening 31 m, be U from the speed of the second fluid of the second ejiction opening 32 ejection atime, make the speed U being handled upside down fluid mwith the speed U of second fluid aratio U a/ U mbe 0.25≤U a/ U m≤ 2.
Figure 22 represents the visual photo of the fluid sprayed from the leading section of the twin-jet nozzle 30 of Figure 21.As shown in figure 22, in the fluid handling device of present embodiment, from the function of the ring-type injection stream performance air screen that the second ejiction opening 32 sprays, suppress the diffusion being handled upside down fluid sprayed from the first ejiction opening 31 with laminated flow spray stream, remain in ring-type injection stream constant therefore, it is possible to fluid will be handled upside down, and diffusion can be suppressed to carry in local.
In addition, the diffusion-condition of fluid is handled upside down along with U a/ U mchange, U a/ U m=0.75 is until target range all remains on constant in ring-type injection stream by being handled upside down fluid and suppressing to spread the optimum speed ratio carrying out in local carrying.In the fluid handling device of present embodiment, can using the position of front end more than 50cm of distance twin-jet nozzle 30 as target range, fluid will be handled upside down and remain in ring-type injection stream and carry.
In addition, about ejiction opening position in the direction of flow, as shown in figure 21, preferably the position of the first ejiction opening 31 and the position of the second ejiction opening 32 are at same position, but, as long as in the scope of the diameter of ejiction opening 31, even if the position generation of both ejiction openings is poor, also can play the function of air screen from the ring-type injection stream of the second ejiction opening 32 ejection, the diffusion being handled upside down fluid sprayed from the first ejiction opening 31 with laminated flow spray stream can be suppressed.
In addition, for the position of the first ejiction opening 31 and the leading section of the second ejiction opening 32, sometimes make the outside wall surface side of nozzle become taper, or make the internal face of nozzle become taper.In addition, in order to suppress the diffusion being handled upside down fluid, most preferably form the shape shown in Figure 21, its less preferred outside wall surface side of nozzle that makes is formed as taper.In addition, the blowing units such as throttle orifice can also be formed to replace nozzle.
The fluid handling device of present embodiment, in a non-contact manner to the warm braw that the clean skin surface carrying of the patient in operation is clean, the body temperature of scalding patient on a large scale that the danger that body temperature in the past can be kept to reduce by heating is high, contributes to managing patient safety.As same using method, can also be used for physics and cover seldom, management is easy to novel incubator.When carrying out ESS, from the clean dry warm braw of surrounding's carrying of endoscope, warm braw after its outer carrying humidification, thus patient is heated, prevent body temperature from reducing, and prevent endoscope fuzzy, physiology keeps Intraabdominal environment, when flowing has the endoscope of liquid, by being formed by the liquid stream of temperature treatment around the visual field of endoscope, body temperature adjusting effect can be obtained and the hemorrhage removing in the visual field will be hindered to the effect outside the visual field, can carry out managing and improve the operability of operation to patient safety.
In addition, for the operating personnel in factory in the presence of a harsh environment or in operation field, and the people of activity in the air containing impurity or allergin, the air cleaning unit of the ozone that polluter, impurity and allergin remove by directly supply can be used as, or by pin point, the carbon dioxide after temperature adjustment can be carried to crops in hot house, the temperature of crops is managed and growth promoting effects.
In addition, in the present embodiment, the first ejiction opening 31 is positive cylindric, and that to be central shafts with the first ejiction opening 31 coaxial is just circular for the second ejiction opening 32, but the shape of the first ejiction opening 31 and the second ejiction opening 32 is not limited thereto.Such as, the cross section that can make the first ejiction opening 31 is ellipticity, makes the second ejiction opening 32 be ring-type correspondingly, or makes the cross section of the first ejiction opening 31 be polygon-shaped, makes the second ejiction opening 32 be ring-type correspondingly.Now, the width of the second ejiction opening 32 is less than 1/2 of the diameter of the inscribed circle of the first ejiction opening 31.
Then, the velocity ratio U of the twin-jet nozzle 30 of present embodiment is described in detail a/ U mwith the diffusion-condition being handled upside down fluid.
(1) laminated flow spray stream VELOCITY DISTRIBUTION be handled upside down the diffusion of fluid
First, in order to compare, the situation being handled upside down fluid with laminated flow spray stream from the front end ejection of single injector (nozzle) is described.Figure 23 represents being handled upside down fluid with laminated flow spray stream from the ejection of one-jet front end, relative to comprise nozzle central shaft longitudinal section on the key diagram of change of VELOCITY DISTRIBUTION of distance Z of distance nozzle ejiction opening.
As shown in figure 23, about the VELOCITY DISTRIBUTION of the injection stream (be handled upside down fluid) of single injector 40 on ejiction opening 41 (Z=0), when 0≤r≤D/2 (r: the distance of the central shaft of distance single injector 40, D: the diameter of ejiction opening 41), speed U 0identical, in the scope of the r > D/2 in the outside of the inwall of single injector 40, in small width (in figure between dotted line A-A'), speed sharply diminishes and becomes 0, and its shape is the shape close with rectangle (for cylindric under three-dimensional).
Now, speed jumpy be handled upside down fluid and around fluid between (between dotted line A-A'), the shearing force large because of speed difference plays a role, thus produces and make the effect of fluid chemical field.This mixed effect has to be made to be handled upside down the fluid effect that (r is positive direction) expands outside radial direction, that is, make to be handled upside down fluid diffusion.In addition, the mixed effect being handled upside down fluid slowly develops along with entering to downstream, and thus, the speed being handled upside down fluid slowly reduces outside radius, and on the contrary, the speed of surrounding fluid slowly increases.As a result, the width (width between dotted line A-A') in the region of fluid chemical field is more more expanded towards downstream (namely spreading), on the contrary, and speed and U 0the width in the identical region of distribution diminish.In addition, march to downstream, in the position of Z=10D, speed and U 0the identical zones vanishes of distribution.Thus, in the position in downstream, the maximal rate U of injection stream 1become and compare U 0little, the diffusion being handled upside down fluid in addition sharply develops, and the width between dotted line A-A ' sharply increases.
The change of above-mentioned VELOCITY DISTRIBUTION is at reynolds number Re (=U 0d/ ν) under≤condition of 1500 setting be handled upside down the spouting velocity U of fluid 0when, is formed.At this, D is the diameter of the ejiction opening 41 of single injector 40, and ν is the kinematic viscosity coefficient being handled upside down fluid.On the other hand, the spouting velocity U of fluid will be handled upside down 0be set as Re > 1500 and speed difference between dotted line A-A' becomes large when, be handled upside down between fluid and surrounding fluid, very large shearing force plays a role, thus the mixed effect grow of fluid, and result is handled upside down fluid and sharply spreads.
(2) from VELOCITY DISTRIBUTION and the diffusion being handled upside down fluid of the injection stream of twin-jet nozzle ejection
Then, the twin-jet nozzle 30 of present embodiment is described.
[ring-type injection stream speed U a/ main injection Flow Velocity U mthe situation of≤1]
Figure 24 represents to make to be handled upside down fluid A with cross section average speed U relative to the first ejiction opening 31 from twin-jet nozzle 30 mmain jet jet (laminated flow spray stream), make fluid B as second fluid with cross section average speed U from the second ejiction opening 32 aring-type injection stream, at the velocity ratio U of two injection streams a/ U mthe key diagram of the change of the VELOCITY DISTRIBUTION of the distance Z of first, second ejiction opening 31,32 of distance when spraying in fluid C under the condition of≤1.
As shown in figure 24, about the VELOCITY DISTRIBUTION of the main jet jet (being handled upside down fluid A) on the first ejiction opening 31 (Z=0) of twin-jet nozzle 30, at 0≤r≤D m/ 2 (D m: the diameter of the first ejiction opening 31) time, speed U m1distribution identical, at r > D mwhen/2, in width large a little (between the dotted line E-E' in figure), speed sharply diminishes, and becomes 0, and its shape is the shape close with rectangle (for cylindric under three-dimensional).Equally, about the VELOCITY DISTRIBUTION of the ring-type injection stream (fluid B) of second ejiction opening (Z=0) of twin-jet nozzle 30, at D m/ 2 < r≤D awhen/2, speed U a1distribution identical, at r > D awhen/2, sharply diminish, and become 0 at width medium velocity large a little, its shape is and rectangle (under three-dimensional r < D mit is cylindric that the scope of/2 covers) close shape.
Now, outside the radius of ring-type injection stream (boundary portion of fluid B and fluid C), identical with during laminated flow spray stream, the shearing force produced because of speed difference makes fluid produce mixed effect, due to this effect, fluid B is to radius diffuse outside, and fluid C spreads to inner sides of radius.This mixed effect slowly develops along with advancing towards downstream direction, and thus, the speed of fluid B slowly reduces from outside radius, and on the contrary, the speed of fluid C slowly increases.As a result, the width (width between dotted line E'-F) in the region of fluid chemical field expands, speed and U a1the width in the identical region of distribution diminish.
On the other hand, between main jet jet and ring-type injection stream, the shearing force still brought because of speed difference produces the mixed effect of fluid, and thus, be handled upside down fluid A outside radius, fluid B slowly spreads to inner sides of radius.But, when fluid spreads, speed difference in the boundary portion of two fluids diminishes, the mixed effect of the fluid therefore produced because of speed difference weakens, result, suppress the diffusion of two fluids to a certain degree, the state that the width of diffusion zone (width between dotted line E-E') diminishes can be kept.Until fluid B diffuses to outside radius, continue to suppress this diffusion.
According to above result, by twin-jet nozzle, fluid A will be handled upside down as main jet jet, using fluid B as ring-type injection stream, at the velocity ratio U of two injection streams a/ U munder the condition of≤1, when spraying in fluid C, until the diffusion development of fluid B, fluid B plays the effect identical with air screen, suppress to be handled upside down the diffusion of fluid A, therefore with spray with laminated flow spray stream be handled upside down fluid A situation compared with, the scope that will spread can be suppressed.In addition, even if when fluid B and fluid C is same substance, in addition, even if when to be handled upside down fluid A and fluid B be same substance, suppression as implied above can be obtained too and be handled upside down the effect that fluid A spreads.
[1 < U a/ U mthe situation of≤2]
Figure 25 represents to make to be handled upside down fluid A with cross section average speed U relative to the first ejiction opening 31 from twin-jet nozzle 30 mmain jet jet (laminated flow spray stream), make fluid B as second fluid with cross section average speed U from the second ejiction opening 32 aring-type injection stream, in the speed of two injection streams than 1 < U a/ U mthe key diagram of the change of the VELOCITY DISTRIBUTION of the distance Z of first, second ejiction opening 31,32 of distance when spraying in fluid C under the condition of≤2.
As shown in figure 25, about the main jet jet of first, second ejiction opening 31,32 (Z=0) of twin-jet nozzle 30 and the shape of the VELOCITY DISTRIBUTION of ring-type injection stream, except the value difference of speed, with U a/ U msimilar when≤1.About the VELOCITY DISTRIBUTION of main jet jet (being handled upside down fluid A), at 0≤r≤D mwhen/2, speed U m1calibration identical, at r > D mwhen/2, in width large a little (broken lines D-D in figure ' between), speed sharply diminishes, and becomes 0, and its shape is the shape close with rectangle (for cylindric under three-dimensional).Equally, about the VELOCITY DISTRIBUTION of ring-type injection stream (fluid B), at D m/ 2 < r≤D awhen/2, speed U a1distribution identical, at r > D awhen/2, sharply diminish, and become 0 at the medium velocity of width large a little, its shape is and rectangle (r < D in three dimensions mit is cylindric that the scope of/2 covers) close shape.
Now, outside the radius of ring-type injection stream (boundary portion of fluid B and fluid C), identical with the situation of laminated flow spray stream under the condition of this velocity ratio, the shearing force produced because of speed difference makes fluid produce mixed effect, due to this effect, fluid B is outside radius, and fluid C spreads to inner sides of radius.This mixed effect slowly develops along with advancing towards downstream direction, and thus, the speed of fluid B slowly reduces from outside radius, and on the contrary, the speed of fluid C slowly increases.As a result, fluid chemical field and the width (width between dotted line E'-F) in region that formed expands, speed and U a1the width in the identical region of distribution diminish.
On the other hand, between main jet jet and ring-type injection stream, the shearing force still brought because of speed difference produces the mixed effect of fluid, and thus, be handled upside down fluid A outside radius, fluid B slowly spreads to inner sides of radius.But the diffusing capacity being handled upside down fluid A under the condition of this velocity ratio compares U a/ U mmany when≤1.Its reason is, the speed because of fluid B uprises and introduces the amount being handled upside down fluid A, and the amount being handled upside down fluid A namely by the fluid B tractive of high speed in incoming fluid B increases.
In addition, along with the position of downstream direction is away from first, second ejiction opening 31,32, the diffusion development of fluid, the speed difference be handled upside down in the boundary portion of fluid A and fluid B diminishes, therefore the mixed effect producing fluid because of speed difference diminishes, as a result, suppress the diffusion being handled upside down fluid A and fluid B to a certain degree, diffusion zone expansion in the radial direction (expansion of the width between dotted line E-E') can be suppressed.But the width of diffusion zone compares U a/ U mlarge when≤1.Until fluid B diffuses to outside radius, continue to suppress this diffusion.
According to above result, by twin-jet nozzle, fluid A will be handled upside down as main jet jet, using fluid B as ring-type injection stream, in the speed of two injection streams than 1 < U a/ U munder the condition of≤2, when spraying in fluid C, by the effect identical with the air screen formed because of fluid B, suppress to be handled upside down fluid A and spread, with spray with laminated flow spray stream be handled upside down fluid A situation compared with, the scope of diffusion can be suppressed.But the diffusing capacity being handled upside down fluid A compares U a/ U mlarge when≤1.In addition, even if when fluid B and fluid C is same substance, in addition, even if when to be handled upside down fluid A and fluid B be same substance, suppression as implied above can be obtained too and be handled upside down the effect that fluid A spreads.
[2 < U a/ U msituation]
The shape of the main jet jet of first, second ejiction opening 31,32 (Z=0) and the VELOCITY DISTRIBUTION of ring-type injection stream, except the value difference of speed, with U a/ U msimilar when≤1.But, with this understanding, the diffusion effect of the fluid B that ring-type injection stream is formed outside radius, and the diffusion effect being handled upside down fluid A and fluid B produced between main jet jet and ring-type injection stream is very high.Therefore, be handled upside down fluid A sharply to spread in the position of downstream 1 ~ 2D degree of the first ejiction opening 31.
Embodiment
3 following Numerical Experiments are utilized to evaluate fluid handling device of the present invention and fluid method for carrying.
(1) condition being formed the collar vortex being most suitable for conveying by pulse jet stream is continuously illustrated
(2) illustrate and effectively hot fluid is held to the method in collar vortex
(3) conveying capacity with the hot fluid of collar vortex is evaluated
First, in the present embodiment, utilize Numerical Experiment as research mode, therefore before each experimental project of research, verify the appropriate property of this simulated experiment result.In result shown below, the result of Numerical Experiment is shown at first, the result of study of projects is shown afterwards.
(1) checking of the appropriate property of Numerical Experiment result
The appropriate property of computational methods, calculation code, computing grid model (computationalgrid model) and design conditions that this research institute uses is verified.In the verification, to form collar vortex as identifying object in water, analysis result and experimental result are compared.
[method about Numerical Experiment]
Table 1 illustrates and calculates relevant imposing a condition, and Figure 11 A ~ Figure 11 C illustrates the schematic configuration of the 2 kinds of grid models (hereinafter referred to as " complete cycle model " and " axisymmetric model ") used in the calculation.Figure 11 A is axisymmetric model figure, Figure 11 B is complete cycle illustraton of model, and Figure 11 C is the spray nozzle part enlarged drawing of complete cycle model.Set the flow field periodically making injection stream spray from nozzle to large space about analyzed area, match with experimental situation and set.
[table 1]
Complete cycle model is using the grid model of the three-dimensional of the region faithful reappearance as analytic target, considers the situation implementing Turbulence Analysis, sets high by the space exploring degree of computing grid.Thereby, it is possible to simulate the action change being formed to diffusion from collar vortex in detail.In contrast, axis target model be only utilize complete cycle model 1/4 the grid model in region, pay periodic boundary condition (be equivalent to stream field and pay axial-symmetric condition) by pair cross-section, can analyze in the flow field of short time to three-dimensional.
[pulsating condition about injection stream]
The waveform of the flow variation of pulse jet stream is the sinusoidal waveform shown in Figure 12.Now, the velocity amplitude V of the condition of flow variation is represented 0and cycle T is the formation condition of collar vortex, be used in condition except described V 0and outside T, also use the diameter d of ejiction opening nthe dimensionless group represented by following formula.
[calculating formula 1]
Amplitude Reynolds number: Re 0=V 0d n/ ν (1), Butterworth reason number:
Strouhal number: Str=d n/ V 0t (3)
[confirming the forming process of the collar vortex of experimental result]
Figure 13 A ~ Figure 13 C be represent utilize dimensionless vorticity to distribute water in collar vortex (following, be called " eddies of water ring ") the figure of forming process, utilize the result of calculation of experimental result and 2 grid models that phase place change in the forming process of the collar vortex of flow variation during 1 week is shown.Figure 13 A is experimental result picture, the result figure of Figure 13 B to be the result figure of complete cycle model, Figure 13 C be axisymmetric model.The profile of figure represents the distribution of the vorticity suitable with the angular velocity of rotation of regional area, and the arrow in figure represents the direction of rotation of whirlpool, and the denseer rotation of green is faster.
Confirm the forming process of collar vortex according to the experimental result of Figure 13 A, during the ejection of injection stream, being formed in boundary layer on the wall in nozzle and vorticity layer S1 rolls up in the outlet of nozzle, forming the collar vortex V1 for carrying thus.On the other hand, during the suction of nozzle, on nozzle inner walls face, form boundary layer S2 by sucking fluid, but this S2 is also separated from wall and forms separation collar vortex VS2.Along with injection stream changes from suction to ejection, VS2 moves to nozzle ejiction opening, interferes with the V1 in forming process.Thereby, it is possible to the impact of prediction VS2 on the intensity (circulation of collar vortex) of the whirlpool of V1 is very large.
[the result of Numerical Experiment]
For the forming process of above shown collar vortex, confirm that Numerical Experiment is (following, be called " CFD (Computational Fluid Dynamics) ") result (Figure 13 B, Figure 13 C), in complete cycle model and axisymmetric model, VS2 is difficult to diffusion than experimental result, and the time of interfering with V1 is long, especially, in the result of axisymmetric model, such tendency is strong.This means, in this CFD, estimate that the intensity (circulation) of V1 is too small a little, relative to its degree, the degree of axisymmetric model is large.But on point in addition, experimental result shows very consistent, the change of action qualitatively of V1 enough can be evaluated.
Figure 14 A and Figure 14 B represents the phase place change of collar vortex in-position (center in collar vortex cross section) and collar vortex diameter.Experimental result represented by the symbol of blacking shows very consistent with the CFD result represented by blank symbol, can carry out quantitative evaluation to the action of collar vortex and size.
According to above result, in this simulated experiment, the strength ratio reality likely doping collar vortex is weak, but can carry out qualitative evaluation to the forming process of collar vortex, also can carry out quantitative assessment to the action of collar vortex and size.
(2) condition being formed the collar vortex being most suitable for conveying by pulse jet stream is continuously illustrated
As the collar vortex being most suitable for carrying, consider the large and collar vortex of value for the circulation representing collar vortex intensity large (until diffusion required time) of the volume volume of transported substance (hold) of setting collar vortex.Therefore, in order to clearly be most suitable for the formation condition of collar vortex of heat conveying, need the clear and definite volume of collar vortex (hereinafter referred to as " air collar vortex ") that formed in atmosphere and the relation between circulation and the pulsating condition of injection stream.
But, experimental result according to the collar vortex (eddies of water ring) in above-mentioned formation water is known, the volume of collar vortex and circulation are directly proportional relation, the circulation of collar vortex can be represented by the Strouhal number Str of pulse jet stream (with reference to formula (2)), under the condition of Str ≈ 0.05, circulate maximum.If such experimental result is set up equally in the forming process of air collar vortex, if that is, confirm that collar vortex formation has hydromechanical similitude, then all opinions obtained in the experiment of eddies of water ring can both be used for air collar vortex.
Therefore, in the present embodiment, after whether the formation of confirmation collar vortex has hydromechanical similitude, the best formation condition of research air collar vortex.Becoming 3 following pulsating condition of maximum condition for being included in circulation in eddies of water ring, studying.
Condition A:Re 0=2350, α=23.3, Str=0.146
Condition B:Re 0=4473, α=19.3, Str=0.053
Condition C: Re 0=5926, α=19.3, Str=0.040
[forming process of the collar vortex in air]
In Figure 15 A, utilize dimensionless vorticity to distribute the phase place change of the air collar vortex illustrated under the pulsating condition of condition A.Complete cycle model is utilized in this CFD.In addition, in Figure 15 B, in order to compare, show the CFD result of the eddies of water ring under same pulsating condition utilizing axisymmetric model.According to Figure 15 A and Figure 15 B, for changing from the action being formed to diffusion of the collar vortex V1 for carrying and separation collar vortex VS2, both are very consistent.In the diffusion process of VS2, find that the time required for diffusion of eddies of water ring is different, and small difference is there is on the cross sectional shape of collar vortex V1, but can judge that this result due to above-mentioned simulated experiment produces, this is because it is different to calculate the grid model used, not formed because the physical property of action fluid is different.Air collar vortex as implied above is consistent with the forming process of eddies of water ring, is identified equally (omitting in figure) under condition B and C, therefore confirms to have hydromechanical similitude in the forming process of collar vortex.
[relation between the intensity of collar vortex and the pulsating condition of injection stream]
Figure 16 illustrates the result of the relation experimentally and between the dimensionless circulation of the collar vortex that draws of CFD and the Strouhal number Str of pulse jet stream.In the figure, dimensionless circulation Re Γ/ Re 0value along with Str change refer to, even if the amplitude Re of pulse jet stream 0for identical value, when cycle T is different (when Str is different), the circulation Re of collar vortex Γalso change.Based on experiment value (zero in figure) and experimental result and the value (green symbol) of presumption formula of establishing based on vortex theory, following change is shown, when Str diminishes, the dimensionless circulation of eddies of water ring increases, become maximum under the condition of Str ≈ 0.05 after, anxious sharp reduction.This represents, becoming the velocity amplitude V of Str ≈ 0.05 0and under the pulsating condition of cycle T, form the collar vortex (that is, being most suitable for the collar vortex carried) that circulation is difficult to very large diffusion.
When observing CFD result (in the figure ●) of eddies of water ring, under dimensionless circulates in any condition of condition A, B, C, all little than experiment value.This is because in this CFD, owing to utilizing axisymmetric model, so under all pulsating condition, separated vorticcs chain rate is actual is difficult to diffusion.Its result, the time that separation collar vortex and collar vortex are interfered is elongated, and the circulation of collar vortex diminishes.But, because the value of dimensionless circulation is roughly the same in condition A, B, C relative to the reduction rate of experiment value, therefore, dimensionless circulation is consistent with experimental result relative to the rate of change of Str, also can confirm that the dimensionless circulation obtained by experiment can become maximum condition according to utilizing the CFD of axisymmetric model.
When observing CFD result (in the figure ◆) of air collar vortex, the dimensionless circular list under condition A reveals the value less than experiment value, shows the value identical with during eddies of water ring.Identical when the CFD of its reason also with eddies of water ring, even if when utilizing complete cycle model, be difficult to diffusion because separated vorticcs chain rate is actual, so the circulation of collar vortex diminishes.In contrast, under condition B and C, dimensionless circulation differs widely with the result of eddies of water ring, shows the value roughly the same with experiment value.Its reason is as follows.
Figure 17 A and Figure 17 B represents the dimensionless vorticity distribution under condition B.Under this pulsating condition, can confirm that the separated boundary layer S2 length in the direction of flow formed during the suction of injection stream is longer than (with reference to Figure 15) when condition A, upstream direction extends.When such separated boundary layer extends, vorticity layer is difficult to be gathered in 1 region, is therefore difficult to be formed the separation collar vortex VS2 with condition A cross section large like that.Therefore, being separated collar vortex becomes the state not easily spread, and in addition, owing to not adding axial-symmetric condition in the calculation, so the diffusion being separated collar vortex further develops, is separated the impact of collar vortex on the formation of collar vortex and diminishes, result, and the circulation of collar vortex becomes large.Dimensionless circulation is consistent with experimental result relative to the tendency of the change of Str, and the dimensionless circulation of air collar vortex is identical with the situation of eddies of water ring, becomes maximum under the condition of Str ≈ 0.05.In addition, its result shows as, and the circulation (intensity of collar vortex) of collar vortex has hydromechanical similitude.
Go out according to above results verification, as long as the Re of pulse jet stream 0, α and Str condition identical, although the physical property of fluid is different, forming process and the circulation of collar vortex are also identical, have hydromechanical similitude, and, collar vortex circulate in the condition of Str ≈ 0.05 under maximum.Confirm according to these in addition, the formation condition being most suitable for the collar vortex carried is Str ≈ 0.05.
(3) illustrate and effectively hot fluid is held to the condition in collar vortex
In order to realize the concentrated conveying of hot fluid in local space, need hot fluid to be contained in collar vortex.But as shown in Figure 13, Figure 15 and Figure 17, during the ejection of injection stream, the boundary layer S1 that the wall in nozzle is formed rolls up in the outlet of nozzle, and forms collar vortex.Therefore, in order to hot fluid is contained in collar vortex, not with pulse jet stream ejection hot fluid, and effective directly to the method for carrying out in S1 injecting.In the present embodiment, hot fluid is effectively contained in the method in collar vortex by research.
[study condition of accommodating method]
For following 4 methods (shown in Figure 18 A ~ Figure 18 C skeleton diagram), accommodating method is studied.
Method 1: with the situation (the most simple method) (not shown) of pulse jet stream ejection hot fluid
Method 2: the wall in nozzle is arranged the method (with reference to Figure 18 A) that thermal source carrys out heating edge interlayer
Method 3: the method (with reference to Figure 18 B) that thermal source carrys out heating edge interlayer is set on the wall of the inner side and outer side of nozzle
Method 4: the wall in nozzle arranges the stream that width is 0.5mm, the method (producing the movement that pressure differential causes hot fluid because of the flowing of flowing path outlet periphery) (with reference to Figure 18 C) that hot fluid nature is injected in boundary layer
In the calculating of the simulated experiment of hot fluid, different from calculating so far, the fundamental equation of use increases by 1, so until obtain result, needs the computing time of about 3 times during air collar vortex.Therefore, in the incipient stage of this research, the eddies of water ring with Experiment Result is studied, utilizes axisymmetric model in the calculation.As the condition in the flow field that research institute uses, suppose to utilize the collar vortex formed under water temperature is the pulsating condition at Str=0.053 in the water of 20 DEG C, the situation concentrating conveying is carried out in local space to the hot water of 80 DEG C.Compared with during cold water, the effect of molecular diffusion during delivery is strong, therefore, it is possible to evaluate the conveying capacity under the strictest transport condition.
[result of study of the accommodating method of hot fluid]
In Figure 19 A ~ Figure 19 D, utilize Temperature Distribution that the conveying result of the hot fluid under 4 methods is shown.When observing the result of the method 1 (past case) shown in Figure 19 A, in collar vortex, holding hot fluid hardly, knownly can not carry out concentrating conveying in local space by the method.In the method, because the state of the hot water being full of 80 DEG C in whole nozzle starts to pulse, so in the period 1 of pulsation, hot fluid is contained in collar vortex, but after second round, hot fluid is not in entrance boundary layer, and therefore hot fluid is not contained in collar vortex.
When observing the result of the method 2 shown in Figure 19 B, due to by the fluid in the heat source boundary layer in nozzle inner walls face, so can confirm to accommodate hot water in collar vortex, can carry out concentrating conveying in local space.But the temperature of the hot water in collar vortex, the phase place after just forming collar vortex, even if also only have an appointment 25 DEG C at the collar vortex central point that temperature is the highest, is only about 31% degree of the temperature of heating source, thus can not says and effectively can hold hot fluid.In addition, the heat held in collar vortex relies on the heat transfer coefficient of fluid to a great extent, thus considers to be unsuitable for the little air of heat transfer coefficient.
When observing the result of the method 3 shown in Figure 19 C, by the wall making thermal source be extended to the outside of nozzle, in flow nozzle, increased during heat ratio method 2 therefore in entrance boundary layer when sucking injection stream by the fluid of this heat source, the temperature of result collar vortex central point rises about 5 DEG C.But in the method, the heat of accommodation also largely depends on the heat transfer coefficient of fluid, it therefore not best accommodating method.
When observing the result of the method 4 shown in Figure 19 D, in the method, the hot water of 80 DEG C flows directly in boundary layer, is therefore speculated as best effect.The hot fluid of entrance boundary layer enters in collar vortex, and hot fluid can carry out concentrating conveying by confirmation in local space.The temperature of the collar vortex central point in the phase place after collar vortex is just formed is about 30 DEG C, roughly the same with during method 3.Under the condition of this flow path width, relative to the volume of collar vortex, the volume of the hot fluid flowed into boundary layer from stream is too small, and therefore, the hot fluid entered in collar vortex spreads immediately, and temperature sharply declines.But, for this point, by increasing flow path width, increasing the volume of the hot fluid flowed into, can improve.
Figure 19 E illustrate as a reference with constant flow rate ejection hot fluid time (, general jet method) the Temperature Distribution of hot fluid, due to mixing and the diffusion effect of fluid, water temperature reduces along with being separated from nozzle, the known concentrated conveying can not carried out in method 2,3 and 4 such local spaces.
According to above result, as the method that hot fluid is held in collar vortex, confirm from the method 4 of the stream of the wall be arranged in nozzle natural heated fluid injection in boundary layer the most effective.In addition, for method 2,3, the weak effect of ratio method 4, but hot fluid can be held in collar vortex, confirm that ratio method 1 is effective.
(4) conveying capacity of the hot fluid that collar vortex has is evaluated
The conveying capacity of collar vortex evaluation ideas is judged as most effective method 4 during by the above-mentioned accommodating method of research.The condition in flow field is identical with the condition used during research accommodating method, supposes that utilizing in water temperature is with the collar vortex that the pulsating condition of Str=0.053 is formed in the water of 20 DEG C, carries out the situation of the concentrated conveying in local space to the hot water of 80 DEG C.Except the flow path width shown in Figure 19 D is the situation of 0.5mm, also carry out the evaluation of conveying capacity when flow path width is 1.5mm.In addition, in this simulated experiment, axisymmetric model is utilized.
[evaluation result of the conveying capacity of hot fluid]
Relation between the temperature of the collar vortex central point under each flow path width shown in Figure 20 and the in-position of central point.When to observe flow path width be the result of 0.5mm, when forming collar vortex, after collar vortex just leaves from nozzle, the temperature at the collar vortex center of 40 DEG C sharply drops to 30 DEG C, can confirm that the diffusion of hot fluid sharply develops.After this, diffusion slowly develops, but the temperature started in the collar vortex in the moment of carrying is not high, therefore arriving the position that distance is 4d (4 times of nozzle diameter d), becomes roughly the same with the water temperature of surrounding.
On the other hand, when observation flow path width is the result of 1.5mm, now, after collar vortex just leaves from nozzle, the temperature at collar vortex center sharply declines, and confirms that the diffusion of hot fluid sharply develops.But by increasing flow path width, make the volume of the hot fluid flowed in collar vortex increase, the thermometer of collar vortex central point reveals than value high during 0.5mm, even if arriving the position that distance is 4d, also remain on the temperature that is 45 DEG C of about 56% of thermal source.The temperature of the collar vortex central point under this flow path width, arriving the position that distance is 10d, is 35.5 DEG C (about 44% of thermal source), arriving the position that distance is 20d, is 22.5 DEG C (about 28% of thermal source).In this simulated experiment, utilize axisymmetric model, therefore estimate that the recycle ratio reality of collar vortex is little.Therefore, consider that the conveying capacity of the reality of collar vortex is higher than above-mentioned result.
Give the evaluation result of the hot conveying capacity of above shown eddies of water ring, infer the conveying capacity of air collar vortex.When air collar vortex, the effect of diffusion larger about 10 times, therefore according to this value, is judged as that conveying capacity drops to 1/10 of water than water.But the translational speed of air collar vortex quickly, is about 20 ~ 30 times of the translational speed of the eddies of water ring that pulsating condition is identical, arrives distance thus and extend.Consider these factors, judge the degree of 2 ~ 3 times of the conveying capacity height water outlet (Figure 20) of air collar vortex.Namely, infer the variations in temperature of the collar vortex central point in air collar vortex when flow path width is 1.5mm, arrive the position that distance is 20d, be 35.5 DEG C of degree (temperature reduces by 44.5 DEG C), arriving the position that distance is 40d, be 22.5 DEG C of degree (temperature reduces by 57.5 DEG C).
Utilizability in industry
Fluid handling device of the present invention and fluid method for carrying can use in the enclosure spaces such as large space, pipeline or passage, the handling unit of the liquid of the same race or not of the same race in the liquid be full of in these spaces can be used as, or be used as the handling unit of the gas of the same race or not of the same race in gas, or be used as the handling unit of the gas in liquid.
In addition, specifically utilize purposes as follows.
(1) as the air supply method of home-use and commercial air-conditioning equipment.
(2) as the air supply method of vehicle air conditioner equipment.
(3) as the concentrated cooling method of the electronic equipment in PC, large server and information technoloy equipment.
(4) as the air supply method of home-use and commercial various air cleaning units
(5) as the concentrated cooling method of the electronic equipment in household electrical appliances, business machine and OA equipment.
(6) when the discharge of discharging in hybrid electric vehicle heat is used for the heated air of catalyst, as hot handling unit.
(7), when the discharge heat reclaimed from exhaust gas being used for heating installation in the heated air of engine and peripheral equipment thereof or car in hybrid electric vehicle, the handling unit of discharging heat is used as.
(8) as the air screen of the gateway of the freezer of van cooler.
(9) as the air screen of the freezer gateway of factory.
(10) on-the-spot in medical treatment, during the mouth and nose conveying oxygen uptake not using oxygen cover to come to patient, as the method for carrying of oxygen.
(11) on-the-spot in medical treatment, when not using cover to attract anesthetic to the mouth and nose conveying of patient, as narcotic method for carrying.
(12) on-the-spot in medical treatment, for keeping the body temperature of the patient in operation, be used as the method for carrying carrying heated air to patient.
(13) on-the-spot in medical treatment, protect the doctor as operator in the gas in order to generation from operation, as the method for carrying of oxygen.
(14) need in airborne vehicle by during exception with oxygen cover for oxygen supply time, be used as method for carrying that oxygen is carried to the mouth and nose of patient when not using oxygen cover.
(15) as the method for carrying of the heated air in the pipe arrangement in factory and cold air.
(16) as the diffusion promotion method of the disinfection drug in the purification tank of water supply pipe.
(17) heated air and the CO of the growth in order to promote crops in hot house and in plant factor or plant is used as 2high concentration carrying method.
(18) in chemical industry equipment factory, the method for carrying to the medicine that the chemical reaction velocity in reacting furnace and Concentration portion control is used as.
(19) as the method for carrying of the fine particle group in gas and in liquid.

Claims (10)

1. a fluid handling device, is characterized in that,
Have:
Blowing unit, sprays carrying fluid from ejiction opening and forms collar vortex in space;
Be handled upside down fluid feeding unit, be handled upside down fluid with the low speed of the speed at the center than described carrying fluid to the outside supply of described carrying fluid.
2. fluid handling device according to claim 1, is characterized in that, described in be handled upside down fluid feeding unit be along described blowing unit wall ejection described in be handled upside down the stream of fluid.
3. fluid handling device according to claim 1, is characterized in that, described in be handled upside down fluid feeding unit formed by the heating source be arranged on the wall of described blowing unit or cooling source described in be handled upside down fluid.
4. a fluid method for carrying, is characterized in that, forms collar vortex by spraying carrying fluid in space from ejiction opening, and is handled upside down fluid with the low speed of the speed at the center than described carrying fluid to the outside supply of described carrying fluid.
5. a fluid handling device, is characterized in that,
Have:
First ejiction opening, under the condition becoming laminated flow spray stream, ejection is handled upside down fluid;
Second ejiction opening, is formed as the ring-type of the width of less than 1/2 of the diameter of the inscribed circle of described first ejiction opening in the mode of the peripheral part surrounding described first ejiction opening, for spraying second fluid with ring-type injection stream.
6. fluid handling device according to claim 5, is characterized in that, is being U from the speed being handled upside down fluid of described first ejiction opening ejection m, be U from the speed of the second fluid of described second ejiction opening ejection atime, 0.25≤U a/ U m≤ 2.
7. fluid handling device according to claim 5, is characterized in that, larger than 0 from the Reynolds number being handled upside down fluid of described first ejiction opening ejection, and is less than 2000.
8. fluid handling device according to claim 6, is characterized in that, larger than 0 from the Reynolds number being handled upside down fluid of described first ejiction opening ejection, and is less than 2000.
9. the fluid handling device according to any one of claim 5 to 8, is characterized in that, with by described be handled upside down fluid remain in described ring-type injection stream state carrying described in be handled upside down the target range of fluid at more than 50cm.
10. a fluid method for carrying, it is characterized in that, with under the condition becoming laminated flow spray stream, fluid is handled upside down from the first ejiction opening ejection, and pass through the mode of the peripheral part to surround described first ejiction opening and the second ejiction opening of the width formation ring-type with less than 1/2 of the diameter of the inscribed circle of described first ejiction opening, with ring-type injection stream ejection second fluid.
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